Answer: tú eres
Explanation: estoy and está are forms of estar. eres is a form of ser.
No, this wouldn’t be correct Spanish
It would be "Sé Bueno" if thats what your looking for
Eres bueno = you are good
ser bueno = to be good
seas bueno , I really don't know but I it's not the answer
the godson of death is the english translation if thats what you wanted